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This is a rebuild of Drinking Water Watch and not yet the official record. Use the agency’s current Drinking Water Watch for anything you need to rely on.

Chemical and radiological sample results

MS0240270 , HCUA-West

11 of the 42 analytes this system has been tested for have been detected at least once, across 352 samples on record.

The other 31 were tested for and never found. An analyte is counted here if any result on record measured it, so this covers the whole history and not the samples listed below.

Across all 352 samples on record, detections range from December 9, 2014 to February 12, 2025. These figures cover the whole record.

What counts as a non-detect is defined in the help: Less than Indicator. This system’s violations.

What has been detected, ever

Every analyte measured above its reporting level at any point in this system’s record, most often detected first. This is not limited to the samples listed below.

Every analyte ever detected for HCUA-West, with how many results found it and when it was first and last detected. Covers the whole record, not only the samples listed below.
Analyte Kind Detected in First detected Last detected
Xylenes, Total 2955 Organic Chemical 80 of 176 results Mar 11, 2015 Jan 5, 2022
Ethylbenzene 2992 Organic Chemical 47 of 176 results Mar 11, 2015 May 18, 2021
Barium 1010 Inorganic Chemical 24 of 24 results Mar 9, 2015 Feb 12, 2025
Fluoride 1025 Inorganic Chemical 24 of 24 results Mar 9, 2015 Feb 12, 2025
Sodium 1052 Inorganic Chemical 12 of 12 results Mar 15, 2021 Dec 3, 2024
Chromium 1020 Inorganic Chemical 12 of 24 results Mar 9, 2015 Oct 23, 2018
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 12 results Dec 9, 2014 Mar 30, 2015
Nickel 1036 Inorganic Chemical 3 of 24 results Apr 26, 2022 Feb 12, 2025
Cyanide 1024 Inorganic Chemical 1 of 24 results May 22, 2018 May 22, 2018
Arsenic 1005 Inorganic Chemical 1 of 24 results Mar 11, 2015 Mar 11, 2015
Combined Uranium 4006 Radionuclide 1 of 26 results Feb 5, 2015 Feb 5, 2015

No date range is applied: this list draws on every sample on record. Show the last two years only.

The most recent samples, result by result

The table below lists 21–30 of 352 samples, newest first — collected March 6, 2024 to February 11, 2025. The summary above covers all 352.

62 results from the 10 samples listed here: 2 detected, 60 not detected. Across the whole record it is 215 of 4,268. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

Chemical and radiological sample results for HCUA-West, every result from 21 to 30 of 352 samples shown, newest first. Not detected means the amount was below the level the laboratory can reliably report, which is given beside it.
Result Analyte Monitoring period
Collected
Feb 11, 2025 13:35
Sampling point
TF104 Treatment Facility TF104
Sample type
Routine
Lab sample
NI-250212-011
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 13:35, sampling point TF104 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 13:35, sampling point TF104 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 13:35, sampling point TF104 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Feb 11, 2025 12:35
Sampling point
TF103 Treatment Facility TF103
Sample type
Routine
Lab sample
NI-250212-010
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 12:35, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 12:35, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 12:35, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Feb 11, 2025 12:20
Sampling point
TF102 Treatment Facility TF102
Sample type
Routine
Lab sample
NI-250212-009
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 12:20, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 12:20, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 12:20, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Feb 11, 2025 12:05
Sampling point
TF101 Treatment Facility TF101
Sample type
Routine
Lab sample
NI-250212-008
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 12:05, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 12:05, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 12:05, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Dec 3, 2024 12:00
Sampling point
TF101 Treatment Facility TF101
Sample type
Routine
Lab sample
NI-241204-003
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Dec 3, 2024 12:00, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Dec 3, 2024 12:00, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Dec 3, 2024 12:00, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Collected
Dec 3, 2024 12:20
Sampling point
TF106 Treatment Facility TF106
Sample type
Routine
Lab sample
NI-241204-002
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Dec 3, 2024 12:20, sampling point TF106 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Dec 3, 2024 12:20, sampling point TF106 Nitrate 1040 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Dec 3, 2024 12:20, sampling point TF106 Nitrite 1041 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Collected
Dec 3, 2024 12:00
Sampling point
TF101 Treatment Facility TF101
Sample type
Routine
Lab sample
NA-241204-005
Laboratory
MSDH Lab
105 mg/l , sample collected Dec 3, 2024 12:00, sampling point TF101 Sodium 1052 EPA method 200.7 Jan 1, 2022 – Dec 31, 2024
Collected
Dec 3, 2024 12:20
Sampling point
TF106 Treatment Facility TF106
Sample type
Routine
Lab sample
NA-241204-004
Laboratory
MSDH Lab
65 mg/l , sample collected Dec 3, 2024 12:20, sampling point TF106 Sodium 1052 EPA method 200.7 Jan 1, 2022 – Dec 31, 2024
Collected
Mar 6, 2024 12:10
Sampling point
TF106 Treatment Facility TF106
Sample type
Routine
Lab sample
VO-240307-012
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 Dichloromethane 2964 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 Benzene 2990 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 Toluene 2991 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 12:10, sampling point TF106 Styrene 2996 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Collected
Mar 6, 2024 14:14
Sampling point
TF105 Treatment Facility TF105
Sample type
Routine
Lab sample
VO-240307-011
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 Dichloromethane 2964 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 Benzene 2990 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 Toluene 2991 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 6, 2024 14:14, sampling point TF105 Styrene 2996 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024

Routine (10).